Maurice Gustave Benoît Choisy (29 June 1897 – 19 June 1966) was a French mycologist and lichenologist.
He was a member of the Botanical Society of France, the Mycological Society of France, and the Linnean Society of Lyon [fr].
He was president of the botanical section of the latter society from 1949 to 1950.
[1] Species named after Choisy include Dermatocarpon choisyi D.D.Awasthi (1965);[2] Haematomma choisyi Werner (1932);[3] and Lecidea choisyi Werner (1932).
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